Question

Which of the following are the common factors of $18x^2$ and $24$ ?

• A. $x$ and $2$
• B. $9$ and $2$
• C. $3,2$ and $x$
• D. $3$ and $2$

Answer 1

The correct option is D $3$ and $2$

Factors of $18x^2=3\times 3\times 2\times x\times x$
Factors of $24=3\times 2\times 2\times 2$
Common factor = $3\times 2$

$\therefore$ $3$ and $2$ are common factors of $18x^2$ and $24$